Accumulation and distribution of perchlorate in spinach and chard growing under greenhouse: Implications for food safety in baby foods commodities

Calderón, R.; Jara, Calvin; Albornoz, Francisco; Palma, P.; Arancibia‐Miranda, Nicolás; Karthikraj, Rajendiran; Zhu, Hongkai

doi:10.1016/j.foodchem.2021.131101

Cited by 11 publications

(3 citation statements)

References 25 publications

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“…Perchlorate (ClO 4 – ) is an oxyanion with widespread applications in the automotive and military industries as a strong oxidant, electroplating operations, and herbicide production . Since the 1990s, ClO 4 – has been found in drinking water, − agriculture products, and human breast milk .…”

Section: Introductionmentioning

confidence: 99%

Mechanistic Study of Electrocatalytic Perchlorate Reduction using an Oxorhenium Complex Supported on a Ti₄O₇ Support

Almassi,

Ren,

Dandu

et al. 2024

ACS Catal.

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Developing a stable and active catalyst for ClO 4 − reduction at nonacidic pH has presented a significant challenge to the catalysis field. Previous research has demonstrated that by depositing an organometallic Re catalyst onto a Ti 4 O 7 support (Re/Ti 4 O 7 ), it was possible to stabilize the catalyst and obtain active electrocatalytic ClO 4 − reduction at circumneutral pH. Thus, the focus of this work was on elucidating the mechanisms of electrocatalytic ClO 4 − reduction in water with the Re/Ti 4 O 7 system. Density functional theory (DFT) simulations indicated that the adsorption of the Re catalyst was exothermic on Ti 4 O 7 , and X-ray photoelectron spectroscopy (XPS) characterization indicated that Re adsorption caused a net reduction of the Ti oxidation state on the Ti 4 O 7 surface. After ClO 4− reduction experiments, XPS results indicated the presence of Ti(0)/Ti(II) surface sites. Cyclic voltammetry experiments in an acetonitrile solvent provided supporting evidence that these surface sites were electroactive and likely participated in the ClO 4 − reduction reaction. Analysis of batch reduction experiments in acetonitrile via kinetic modeling estimated a catalyst turnover number of 332 ± 23, which provided further evidence that the reduced Ti sites could regenerate the Re catalyst. However, these reduced Ti sites were finite in number and required the production of adsorbed hydrogen via water reduction to facilitate continuous ClO 4 − reduction. DFT results indicated that the reduction of ClO 4 − to Cl − was exothermic and that reduced Ti sites participated in the reduction reaction. The experimental and DFT results allowed a preliminary mechanism for ClO 4 − reduction on Re/Ti 4 O 7 to be proposed.

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Section: Introductionmentioning

confidence: 99%

Mechanistic Study of Electrocatalytic Perchlorate Reduction using an Oxorhenium Complex Supported on a Ti₄O₇ Support

Almassi,

Ren,

Dandu

et al. 2024

ACS Catal.

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“…According to its high solubility in water, it is usually discovered in ground water, surface water and drinking water 1 . Nowadays, apart from being found in water, it also can be found and accumulated in foodstuffs such as vegetables, meats, fruits and edible crops due to increase of global population in recent years 2,3 . Hence, as a water and food contaminant, it has become severe environmental issue and affected to human health 3 .…”

Section: Perchlorate Properties and Toxicitymentioning

confidence: 99%

“…The development of perchlorate anion sensors has been paid attention due to its important roles in environmental [1][2][3] and human health risk reduction [4][5][6] . The toxicity of perchlorate is to inhibit iodine uptake to thyroid gland which results in reduce metabolism of thyroid hormone 7 .…”

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confidence: 99%

Use of modified NaY zeolite as ionophore for perchlorate selective electrode

Srisassawatkul

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NaY zeolite is well deserved for being employed as a catalyst, adsorbent, and ion exchanger. Therefore, its ion exchange property is used in ion selective electrodes (ISEs). Commercial NaY zeolite was modified with cetyltrimethylammonium bromide (CTAB) in various concentrations (100, 150, and 200 mM), denoted them as 100, 150 and 200 SMZ, respectively. XRD, FT-IR, SEM and TGA/DTG�showed good agreement of CTAB adsorption on zeolite surface. Then SMZ�is used to fabricate polymeric membrane with polyvinyl chloride (PVC) plasticized with o-nitrophenyl octyl ether (o-NPOE). The best performance of ISE was exhibited at the membrane composition of 200 SMZ: PVC: NPOE in the ratio of 16.30: 30.03: 62.07. The selectivity coefficients of the proposed electrode towards various interfering ions were determined by separate solution method (SSM) and the result showed that our fabricated ISE is selective to perchlorate anion. This electrode worked well over wide concentration range from 1 ? 10-5 to 1 ? 10-2�M�of with a Nernstian slope of -57.63 ? 0.47 mV decade-1 with a low detection limit of 9.28 ?M. The response time of electrode is very fast (? 10 s) over a period of 1 month with good reproducibility. The fabricated ClO4- ISEs were used to analyze ClO4- in real water samples with satisfactory results.

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Chlorate and perchlorate in tea leaves from major producing regions in China and related human exposure risk

Hu,

Li,

Jia

et al. 2024

Environ Sci Pollut Res

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Accumulation and distribution of perchlorate in spinach and chard growing under greenhouse: Implications for food safety in baby foods commodities

Cited by 11 publications

References 25 publications

Mechanistic Study of Electrocatalytic Perchlorate Reduction using an Oxorhenium Complex Supported on a Ti₄O₇ Support

Mechanistic Study of Electrocatalytic Perchlorate Reduction using an Oxorhenium Complex Supported on a Ti₄O₇ Support

Use of modified NaY zeolite as ionophore for perchlorate selective electrode

Chlorate and perchlorate in tea leaves from major producing regions in China and related human exposure risk

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Accumulation and distribution of perchlorate in spinach and chard growing under greenhouse: Implications for food safety in baby foods commodities

Cited by 11 publications

References 25 publications

Mechanistic Study of Electrocatalytic Perchlorate Reduction using an Oxorhenium Complex Supported on a Ti4O7 Support

Mechanistic Study of Electrocatalytic Perchlorate Reduction using an Oxorhenium Complex Supported on a Ti4O7 Support

Use of modified NaY zeolite as ionophore for perchlorate selective electrode

Chlorate and perchlorate in tea leaves from major producing regions in China and related human exposure risk

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Product

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Mechanistic Study of Electrocatalytic Perchlorate Reduction using an Oxorhenium Complex Supported on a Ti₄O₇ Support

Mechanistic Study of Electrocatalytic Perchlorate Reduction using an Oxorhenium Complex Supported on a Ti₄O₇ Support